Elements of Geology, for the Use of Schools And Academies
Elements of Geology, for the Use of Schools And Academies
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In our eReader you can find the full English version of the book. Read Elements of Geology, for the Use of Schools And Academies Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Elements of Geology, for the Use of Schools And Academies
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He may learn which part, if it be a compound rock, is liable to give way before such influences, and the conditions under which it does so. Granite generally is considered a proper material for national monuments. Some granites, however, though they may be hard and difficult to work, when first taken from the quarry, are among the worst building materials, in conse- quence of the facility with which the feldspar in them decomposes, when exposed to the action of a wet atmosphere, in a climate wh...ich may be warm dur- ing part of the year, and cold during the other. " " Rocks which readily absorb moisture, such as many of those which are termed free stones, are ex- ceedingly bad for the external portions of exposed pub- lic buildings ; since in countries where frosts occur, the freezing of the water in the wet surface continual- ly peels off the latter, and eventually destroys the or- namental work carved upon it. It should be recol- lected that free stones, so termed because they are easily worked, are often valued because they may be cut readily when first taken from the quarry, and subsequently become harder when exposed to the atmosphere ; and that this quality arises from the evaporation of the water contained in the stone when forming part of the natural rock.
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You can find similar books in the "Read Also" column, or choose other free books by W W William Williams Mather to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
He may learn which part, if it be a compound rock, is liable to give way before such influences, and the conditions under which it does so. Granite generally is considered a proper material for national monuments. Some granites, however, though they may be hard and difficult to work, when first taken from the quarry, are among the worst building materials, in conse- quence of the facility with which the feldspar in them decomposes, when exposed to the action of a wet atmosphere, in a climate wh...ich may be warm dur- ing part of the year, and cold during the other. " " Rocks which readily absorb moisture, such as many of those which are termed free stones, are ex- ceedingly bad for the external portions of exposed pub- lic buildings ; since in countries where frosts occur, the freezing of the water in the wet surface continual- ly peels off the latter, and eventually destroys the or- namental work carved upon it. It should be recol- lected that free stones, so termed because they are easily worked, are often valued because they may be cut readily when first taken from the quarry, and subsequently become harder when exposed to the atmosphere ; and that this quality arises from the evaporation of the water contained in the stone when forming part of the natural rock.
What to read after Elements of Geology, for the Use of Schools And Academies?
You can find similar books in the "Read Also" column, or choose other free books by W W William Williams Mather to read onlineMoreLess
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